I'd like to have a checklist of all of them, including as much information about them as possible, such as the format, number of players, and the developer. So I'm starting this list with all the ones that I know of. Please help me finish it by helping me to fill in all of the blanks. I've heard there's over 50 of them!
Saturn shmups!
3 Wonders (horizontal)
Assault Suit Leynos 2 (horizontal)
Batsugun (vertical)
Battle Garegga (vertical)
Blast Wind (vertical)
Bokan To Ippatsu Doronboo Kanpekiban (vertical)
Capcom Generation 1 (vertical)
Capcom Generation 3 (vertical)
Chaos Control (3D)
Choaniki (horizontal)
Cotton 2 (horizontal)
Cotton Boomerang (horizontal)
Darius 2 (horizontal)
Darius Gaiden (horizontal)
Dezaemon 2 (mixed)
Don Pachi (vertical)
Do Don Pachi (vertical)
Fantasy Zone (horizontal)
G-Vector (3D)
Game Tengoku (vertical)
Gekirindan (vertical)
Gradius Deluxe Pack (horizontal)
Guardian Force (mixed)
Gun Frontier (vertical)
Gunbird (vertical)
Hyper Duel (horizontal)
Image Fight & X-Multiply (mixed)
Jikkyo Oshaberi Parodius (horizontal)
Kaitei Daisensou (horizontal)
Keio Flying Squadron 2 (horizontal)
Kingdom Grand Prix (vertical)
Konami Antiques MSX Ultra Pack (mixed)
Kyukyoku Tiger 2 Plus (vertical)
Layer Section (vertical)
Layer Section 2 (vertical)
Macross SDF (horizontal)
Macross DYRL (horizontal)
Metal Black (horizontal)
Parodius Deluxe Pack (horizontal)
Planet Joker (3D)
Radiant Silvergun (vertical)
Salamander Deluxe Pack (horizontal)
Sengoku Blade (horizontal)
Sexy Parodius (horizontal)
Shienryu (vertical)
Skull Fang (vertical)
Sol Divide (horizontal)
Sonic Wings Special (vertical)
Soukyugurentai (vertical)
Steam Hearts (vertical)
Stellar Assault (3D)
Strikers 1945 (vertical)
Strikers 1945 2 (vertical)
Terra Cresta 3D (3D)
Thunderforce 5 (horizontal)
Thunderforce Gold Pack 1 (horizontal)
Thunderforce Gold Pack 2 (horizontal)
Twinbee Deluxe Pack (vertical)
Twinkle Star Sprites (vertical)
Wolf Fang (horizontal)
End of list!
OK, that has us at 60 now!